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Full text of "Circuits"

Supercap Racer Kit 



Make] Projects 

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build, hack, tweak, share, discover,- 



Supercap Racer Kit 

Written By: Marc de Vinck 



/ TOOLS: J O PARTS: 

Soldering iron (1) Supercap Racer Kit (1) 

Wire cutter/stripper (1) 



SUMMARY 

The Supercap Racer is fast, unpredictable, and fun to build! 

Designed by George Albercook (founder of Rocks and Robots) and manufactured by MAKE, 
the Supercap Racer is a great way to hone your soldering skills, and have some fun. 

Supercap Racer Kit Video 



© Make Projects www.makeprojects.com Page 1 of 7 



Supercap Racer Kit 



Step 1 — Supercap Racer Kit 




• Start out by checking the kit's 
contents. You can check it against 
the product description page in the 
Maker Shed . 

• You are just 9 steps away from 
having fun! 



Step 2 




• Start by adding the motors. There are (2) motors and they are soldered to the PCB at 
locations "Motor A" and "Motor B". The "tabs" of the motors will eventually be soldered to 
the small square pads on the PCB. There are (4) small square pads on the PCB. 

• Start by adding a small amount of solder to the small square pads where the tabs of the 
motors will sit on the PCB (see red circle markers in picture #2) 

• Next, while holding the motor in place, heat the small metal tab of the motor, melting the 
solder on the PCB. (see picture #3) 



© Make Projects 



www.makeprojects.com 



Page 2 of 7 



Supercap Racer Kit 



Step 3 




• For added durability, solder the motor holder to the PCB on one edge. No need to solder it 
on both sides. 

• Don't over heat this connection, and make sure the tip of the soldering iron touches the 
PCB and the motor holder. 



Step 4 




• Now we need to add the switch. 

• Insert the switch from the same side the motors are mounted on. 

• The switch needs to be inserted as pictured. 

• When looking at the switch from the front (as in picture #1) you should see a small red 
button through the metal tab. This small red button should be on the left side of the 
switch. 

• The metal tab should angle up towards the right. 

• Solder the switch to the PCB from the back. You might have to hold it down firmly so it 
lays flat against the PCB. 

• Once soldered, trim the leads of the switch close to the PCB. 



© Make Projects 



www.makeprojects.com 



Page 3 of 7 



Supercap Racer Kit 



Step 5 




• Next it's time to add the supercapacitor. 

• The supercap gets inserted into the back of the PCB. 

• Make sure the lead marked with the black stripe is inserted into the hole marked with a (-) 
sign. This super-cap's (-) lead is longer, which is the opposite of most electronics parts, 
where the longer lead is usually (+). 

• One last time! The lead with the black stripe is the (-) lead! 

• Flip the board over and solder it in place. 

• Followed by a quick trim of the leads. 



© Make Projects 



www.makeprojects.com 



Page 4 of 7 



Supercap Racer Kit 



Step 6 




• Now we need to add the power header. 

• The connector should be attached to the wires in your kit. You can see how it can be 
removed in picture #2. For now keep it attached. 

• Insert the connector from the front of the PCB, with the red wire on the right. The PCB is 
labeled (+) too! 

• Flip the PCB over and solder the connector to the board. It will be close to the super-cap, 
but don't worry; there will be just enough room to solder the connections. 

Step 7 




• Now we need to add a tail. Yes, a tail! 

• Start by stripping off about 1/8" of the plastic on the supplied wire. 

• Next, insert the "tail" wire from the back of the PCB. 

• Solder the wire from the front of the PCB and trim it flush. 

• Last but not least, add some character to the tail. I made mine into a nice curve. 



© Make Projects 



www.makeprojects.com 



Page 5 of 7 



Supercap Racer Kit 



Step 8 



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• Time to add the wheels. 

• The rubber caps are great wheels. We just need to trim them a bit shorter. 

• You can easily cut them to about 1/4" long. 

• Once you cut them, push the part with the rounded end onto the motor's shaft. 

• Make sure not to push them on too far. The rubber must not hit the motor's body. (See 
picture #2.) 

Step 9 




• Make the battery pack. 

• Start by stripping and twisting the ends of the power supply wires. 

• Next solder them to the supplied battery pack. The red wire is (+) and is soldered to the 
left of the battery pack. 

• The black wire is the (-) and gets soldered to the right, as in picture #2. 



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www.makeprojects.com 



Page 6 of 7 



Supercap Racer Kit 



Step 10 







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• Charge it and go! 

• To charge the Supercap Racer, 
simply plug in the battery pack 
(it only fits one way) and hold 
down the switch for 10-20 
seconds. 

• Next, unplug the power supply 
while still holding the switch. 

• Place on a flat surface and let it 
go! 

• Try bending the tail to make it go in 
a different direction, or charging it a 
little longer to go faster. Have fun! 



This project first appeared in MAKE Volume 30 . 



This document was last generated on 2012-10-31 06:46:31 PM. 



© Make Projects 



www.makeprojects.com 



Page 7 of 7